Composite pillow

Abstract

A composite pillow which prevents difference in level and a depression from being formed at a contact surface between divided core material parts, thereby prevents discomfort to a user. The composite pillow has core parts of different material or different hardness located at proper positions. The composite pillow is divided into a central part and a holding part for holding the central part by face-to-face contact and the parts are arranged in parallel. The central part and the holding part differ in hardness or material; and right and left contact surfaces of the holding parts contacting the central part and corresponding contact surfaces of the central part are diagonally formed.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]Applicant's copending applications U.S. Ser. No. 11 / 076,037 and U.S. Ser. No. 11 / 136,603 are directed to related subject matter.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a composite pillow configured by combining a plurality of (more properly, three or more) divided parts, and mainly to a composite pillow for improving the fit and functions of a pillow by providing a different hardness or material for each part.[0004]2. Description of the Related Art[0005]In order to improve the fit or other functions of a pillow, different materials or hardnesses are required in different sections of the pillow. Examples of an integrally formed pillow include those made of a urethane-based resin, of a natural material such as a rubber-based material, and of a liquid material, gel material or gaseous material, filled into a pillow case having a structure which can maintain the shape thereof. In such a...

AI Technical Summary

Benefits of technology

[0009]It is a first object of the present invention to configure a pillow for preventing a difference in levels and a depression from being formed where parts of the divided core material contact, thereby preventing discomfort to a user.

[0016]In accordance with the second aspect of the invention, the holding parts are located on the right and left sides of the central part; the contact surfaces of the right and left holding parts contacting the central part are inclined so as to protrude toward the lower portion of the central part; and the corresponding contact surfaces of the central part are inclined so as to cover the contact surfaces of the holding parts. Accordingly, the contact surface of the central part diagonally overlaps the contact surface of the holding part, thereby providing a composite pillow which is level and has joints imperceptible to a user.

[0017]Furthermore, the central part presses down against the contact surfaces of the holding parts located below, due to the load of a head applied onto the center of the composite pillow. In this manner the central part and the holding parts are tightly fixed to each other, thereby eliminating the possibility of sliding apart from each other.

[0018]In accordance with the third aspect of the invention, the central part is divided into a neck side portion and a head top side portion contacting the neck side portion with face-to-face contact, wherein both portions differ in hardness or material, and wherein the contact surfaces of the neck side portion and the head top side portion are parallel and diagonally formed. This enables the composite pillow to be easily manufactured and to protect the neck and cervical vertebrae, while difference in level between the neck side portion and the head top side portion is imperceptible.

Problems solved by technology

In such a pillow, it is extremely difficult to locate parts of different materials or hardnesses at proper positions.

However, since the contact surfaces between adjacent divided parts of core material are almost perpendicular, there are drawbacks in creating discomfort due to difference in levels, resulting from different hardness between the parts, and such that a depression is formed in the divided core material when used.

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